Good information on iPad EMR apps by Houston Neal:
"...more and more electronic medical record (EMR) vendors are releasing iPad-specific versions of their EMRs. Some offer native iPad EMRs; others offer web-browser access through the iPad. However, there is no perfect iPad EMR solution"
I'm personally using RDP to log into my Win Apps, which we have designed to iPad friendly.
Read more:iPad EMR Apps | A Guide to Electronic Medical Records